package/base-files/files/lib/functions.sh

   1 #!/bin/sh
   2 # Copyright (C) 2006-2011 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4
   5
   6 debug () {
   7         ${DEBUG:-:} "$@"
   8 }
   9 mount() {
  10         busybox mount "$@"
  11 }
  12
  13 # newline
  14 N="
  15 "
  16
  17 _C=0
  18 NO_EXPORT=1
  19 LOAD_STATE=1
  20 LIST_SEP=" "
  21
  22 hotplug_dev() {
  23         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  24 }
  25
  26 append() {
  27         local var="$1"
  28         local value="$2"
  29         local sep="${3:- }"
  30
  31         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  32 }
  33
  34 list_contains() {
  35         local var="$1"
  36         local str="$2"
  37         local val
  38
  39         eval "val=\" \${$var} \""
  40         [ "${val%% $str *}" != "$val" ]
  41 }
  42
  43 list_remove() {
  44         local var="$1"
  45         local remove="$2"
  46         local val
  47
  48         eval "val=\" \${$var} \""
  49         val1="${val%% $remove *}"
  50         [ "$val1" = "$val" ] && return
  51         val2="${val##* $remove }"
  52         [ "$val2" = "$val" ] && return
  53         val="${val1## } ${val2%% }"
  54         val="${val%% }"
  55         eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
  56 }
  57
  58 config_load() {
  59         [ -n "$IPKG_INSTROOT" ] && return 0
  60         uci_load "$@"
  61 }
  62
  63 reset_cb() {
  64         config_cb() { return 0; }
  65         option_cb() { return 0; }
  66         list_cb() { return 0; }
  67 }
  68 reset_cb
  69
  70 package() {
  71         return 0
  72 }
  73
  74 config () {
  75         local cfgtype="$1"
  76         local name="$2"
  77
  78         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  79         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  80         append CONFIG_SECTIONS "$name"
  81         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  82         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  83         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  84 }
  85
  86 option () {
  87         local varname="$1"; shift
  88         local value="$*"
  89
  90         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  91         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  92 }
  93
  94 list() {
  95         local varname="$1"; shift
  96         local value="$*"
  97         local len
  98
  99         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
 100         [ $len = 0 ] && append CONFIG_LIST_STATE "${CONFIG_SECTION}_${varname}"
 101         len=$(($len + 1))
 102         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
 103         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
 104         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
 105         list_cb "$varname" "$*"
 106 }
 107
 108 config_rename() {
 109         local OLD="$1"
 110         local NEW="$2"
 111         local oldvar
 112         local newvar
 113
 114         [ -n "$OLD" -a -n "$NEW" ] || return
 115         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
 116                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 117                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
 118                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
 119                 unset "$oldvar"
 120         done
 121         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
 122
 123         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
 124 }
 125
 126 config_unset() {
 127         config_set "$1" "$2" ""
 128 }
 129
 130 config_clear() {
 131         local SECTION="$1"
 132         local oldvar
 133
 134         list_remove CONFIG_SECTIONS "$SECTION"
 135         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
 136
 137         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
 138                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 139                 unset $oldvar
 140         done
 141 }
 142
 143 # config_get <variable> <section> <option> [<default>]
 144 # config_get <section> <option>
 145 config_get() {
 146         case "$3" in
 147                 "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
 148                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
 149         esac
 150 }
 151
 152 # config_get_bool <variable> <section> <option> [<default>]
 153 config_get_bool() {
 154         local _tmp
 155         config_get _tmp "$2" "$3" "$4"
 156         case "$_tmp" in
 157                 1|on|true|enabled) _tmp=1;;
 158                 0|off|false|disabled) _tmp=0;;
 159                 *) _tmp="$4";;
 160         esac
 161         export ${NO_EXPORT:+-n} "$1=$_tmp"
 162 }
 163
 164 config_set() {
 165         local section="$1"
 166         local option="$2"
 167         local value="$3"
 168         local old_section="$CONFIG_SECTION"
 169
 170         CONFIG_SECTION="$section"
 171         option "$option" "$value"
 172         CONFIG_SECTION="$old_section"
 173 }
 174
 175 config_foreach() {
 176         local ___function="$1"
 177         [ "$#" -ge 1 ] && shift
 178         local ___type="$1"
 179         [ "$#" -ge 1 ] && shift
 180         local section cfgtype
 181
 182         [ -z "$CONFIG_SECTIONS" ] && return 0
 183         for section in ${CONFIG_SECTIONS}; do
 184                 config_get cfgtype "$section" TYPE
 185                 [ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
 186                 eval "$___function \"\$section\" \"\$@\""
 187         done
 188 }
 189
 190 config_list_foreach() {
 191         [ "$#" -ge 3 ] || return 0
 192         local section="$1"; shift
 193         local option="$1"; shift
 194         local function="$1"; shift
 195         local val
 196         local len
 197         local c=1
 198
 199         config_get len "${section}" "${option}_LENGTH"
 200         [ -z "$len" ] && return 0
 201         while [ $c -le "$len" ]; do
 202                 config_get val "${section}" "${option}_ITEM$c"
 203                 eval "$function \"\$val\" \"$@\""
 204                 c="$(($c + 1))"
 205         done
 206 }
 207
 208 load_modules() {
 209         [ -d /etc/modules.d ] && {
 210                 cd /etc/modules.d
 211                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 212         }
 213 }
 214
 215 include() {
 216         local file
 217
 218         for file in $(ls $1/*.sh 2>/dev/null); do
 219                 . $file
 220         done
 221 }
 222
 223 find_mtd_index() {
 224         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 225         local INDEX="${PART##mtd}"
 226
 227         echo ${INDEX}
 228 }
 229
 230 find_mtd_part() {
 231         local INDEX=$(find_mtd_index "$1")
 232         local PREFIX=/dev/mtdblock
 233
 234         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 235         echo "${INDEX:+$PREFIX$INDEX}"
 236 }
 237
 238 find_mtd_chardev() {
 239         local INDEX=$(find_mtd_index "$1")
 240         local PREFIX=/dev/mtd
 241
 242         [ -d /dev/mtd ] && PREFIX=/dev/mtd/
 243         echo "${INDEX:+$PREFIX$INDEX}"
 244 }
 245
 246 strtok() { # <string> { <variable> [<separator>] ... }
 247         local tmp
 248         local val="$1"
 249         local count=0
 250
 251         shift
 252
 253         while [ $# -gt 1 ]; do
 254                 tmp="${val%%$2*}"
 255
 256                 [ "$tmp" = "$val" ] && break
 257
 258                 val="${val#$tmp$2}"
 259
 260                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 261                 shift 2
 262         done
 263
 264         if [ $# -gt 0 -a -n "$val" ]; then
 265                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 266         fi
 267
 268         return $count
 269 }
 270
 271
 272 jffs2_mark_erase() {
 273         local part="$(find_mtd_part "$1")"
 274         [ -z "$part" ] && {
 275                 echo Partition not found.
 276                 return 1
 277         }
 278         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 279 }
 280
 281 uci_apply_defaults() {
 282         cd /etc/uci-defaults || return 0
 283         files="$(ls)"
 284         [ -z "$files" ] && return 0
 285         mkdir -p /tmp/.uci
 286         for file in $files; do
 287                 ( . "./$(basename $file)" ) && rm -f "$file"
 288         done
 289         uci commit
 290 }
 291
 292 group_add() {
 293         local name="$1"
 294         local gid="$2"
 295         local rc
 296         [ -f "${IPKG_INSTROOT}/etc/group" ] || return 1
 297         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/group
 298         echo "${name}:x:${gid}:" >> ${IPKG_INSTROOT}/etc/group
 299         rc=$?
 300         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/group
 301         return $rc
 302 }
 303
 304 group_exists() {
 305         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/group
 306 }
 307
 308 user_add() {
 309         local name="${1}"
 310         local uid="${2}"
 311         local gid="${3:-$2}"
 312         local desc="${4:-$1}"
 313         local home="${5:-/var/run/$1}"
 314         local shell="${6:-/bin/false}"
 315         local rc
 316         [ -f "${IPKG_INSTROOT}/etc/passwd" ] || return 1
 317         [ -n "$IPKG_INSTROOT" ] || lock /var/lock/passwd
 318         echo "${name}:x:${uid}:${gid}:${desc}:${home}:${shell}" >> ${IPKG_INSTROOT}/etc/passwd
 319         echo "${name}:x:0:0:99999:7:::" >> ${IPKG_INSTROOT}/etc/shadow
 320         rc=$?
 321         [ -n "$IPKG_INSTROOT" ] || lock -u /var/lock/passwd
 322         return $rc
 323 }
 324
 325 user_exists() {
 326         grep -qs "^${1}:" ${IPKG_INSTROOT}/etc/passwd
 327 }
 328
 329
 330 pi_include() {
 331         if [ -f "/tmp/overlay/$1" ]; then
 332                 . "/tmp/overlay/$1"
 333         elif [ -f "$1" ]; then
 334                 . "$1"
 335         elif [ -d "/tmp/overlay/$1" ]; then
 336                 if [ -n "$(ls /tmp/overlay/$1/*.sh 2>/dev/null)" ]; then
 337                         for src_script in /tmp/overlay/$1/*.sh; do
 338                                 . "$src_script"
 339                         done
 340                 fi
 341         elif [ -d "$1" ]; then
 342                 if [ -n "$(ls $1/*.sh 2>/dev/null)" ]; then
 343                         for src_script in $1/*.sh; do
 344                                 . "$src_script"
 345                         done
 346                 fi
 347         else
 348                 echo "WARNING: $1 not found"
 349                 return 1
 350         fi
 351         return 0
 352 }
 353
 354 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh